12507013 has 4 divisors (see below), whose sum is σ = 12712108. Its totient is φ = 12301920.

The previous prime is 12506983. The next prime is 12507031. The reversal of 12507013 is 31070521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31070521 = 59 ⋅526619.

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 5866084 = 2577^2 + 2422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12507013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102456 + ... + 102577.

It is an arithmetic number, because the mean of its divisors is an integer number (3178027).

Almost surely, 2^12507013 is an apocalyptic number.

It is an amenable number.

12507013 is a deficient number, since it is larger than the sum of its proper divisors (205095).

12507013 is an equidigital number, since it uses as much as digits as its factorization.

12507013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205094.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12507013 is about 3536.5255548349. The cubic root of 12507013 is about 232.1228355164.

Adding to 12507013 its reverse (31070521), we get a palindrome (43577534).

The spelling of 12507013 in words is "twelve million, five hundred seven thousand, thirteen".